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EP3018931B1 - Verfahren und System zur Einrichtung eines selbstorganisierten mobilen Kerns in einem zellularen Kommunikationsnetzwerk - Google Patents

Verfahren und System zur Einrichtung eines selbstorganisierten mobilen Kerns in einem zellularen Kommunikationsnetzwerk Download PDF

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Publication number
EP3018931B1
EP3018931B1 EP14003736.7A EP14003736A EP3018931B1 EP 3018931 B1 EP3018931 B1 EP 3018931B1 EP 14003736 A EP14003736 A EP 14003736A EP 3018931 B1 EP3018931 B1 EP 3018931B1
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EP
European Patent Office
Prior art keywords
network
core
functionality
cellular communication
stationary
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EP14003736.7A
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English (en)
French (fr)
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EP3018931A1 (de
Inventor
Andrew Sergeev
Evgeny Zemlerub
Eyal Ben-Sa'adon
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Adva Optical Networking SE
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Adva Optical Networking SE
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Priority to EP14003736.7A priority Critical patent/EP3018931B1/de
Priority to US14/932,015 priority patent/US10349291B2/en
Publication of EP3018931A1 publication Critical patent/EP3018931A1/de
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W24/00—Supervisory, monitoring or testing arrangements
    • H04W24/04—Arrangements for maintaining operational condition
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L41/00—Arrangements for maintenance, administration or management of data switching networks, e.g. of packet switching networks
    • H04L41/06—Management of faults, events, alarms or notifications
    • H04L41/0654—Management of faults, events, alarms or notifications using network fault recovery
    • H04L41/0668—Management of faults, events, alarms or notifications using network fault recovery by dynamic selection of recovery network elements, e.g. replacement by the most appropriate element after failure
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L45/00—Routing or path finding of packets in data switching networks
    • H04L45/22—Alternate routing
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W24/00—Supervisory, monitoring or testing arrangements
    • H04W24/02—Arrangements for optimising operational condition
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/16—Performing reselection for specific purposes
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W40/00—Communication routing or communication path finding
    • H04W40/02—Communication route or path selection, e.g. power-based or shortest path routing
    • H04W40/22—Communication route or path selection, e.g. power-based or shortest path routing using selective relaying for reaching a BTS [Base Transceiver Station] or an access point
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W40/00—Communication routing or communication path finding
    • H04W40/24—Connectivity information management, e.g. connectivity discovery or connectivity update
    • H04W40/246—Connectivity information discovery
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W60/00—Affiliation to network, e.g. registration; Terminating affiliation with the network, e.g. de-registration
    • H04W60/06—De-registration or detaching

Definitions

  • the present invention relates to a method and a system for establishing a self-organized mobile core in a cellular communication network having a core element, wherein a standalone mobile network is created when the core element becomes unavailable.
  • Common cellular communications networks provide convenient wireless communications services. These services include, for example, cellular telephone services, paging, Internet access, and data transfer services, among others.
  • Such a common cellular communication network includes a core element and a Radio Access Network (RAN).
  • the core element comprises at least a connectivity gateway, a mobility management function and a home subscriber functionality.
  • the Radio Access Network further comprises base stations and respective mobile stations, the client devices. Each of the client devices is typically connected to one of the base stations. This connection needs management of backhaul and core network connectivity, which is usually facilitated by the core element.
  • the Radio Access Network becomes useless, even if the base stations are still undamaged and, therefore, available.
  • WO 2012/120519 A1 discloses a communication system which comprises moving relays including base- and mobile- station functionality and a radio manager, all co-located, and emergency moving relays further including a simulated stationary network that includes a simulated IP connectivity gateway communicating with a simulated mobility management entity and simulating the operation of a stationary network in an emergency mode.
  • EP 2 713 574 A1 discloses a method for establishing a self-organized emergency mobile core in a cellular communication network, the cellular communication network having a core element.
  • program code for implementing core network functionality is stored on at least one stationary network element of the cellular communication network allowing to host virtual network functionality, wherein the core network functionality remains inactive when the core element is available.
  • an emergency event within the cellular communication network resulting in an unavailability of the core element is detected and in response to the detected emergency event, operating the core network functionality is started in order to establish a self-organized emergency mobile core.
  • WO 2008/011149 A2 discloses a method for managing wireless base stations using a distributed virtual base station manager, wherein a network administrator accesses one of the wireless base stations, which serves as the management point.
  • the management point wireless base station distributes parameters to each wireless base station to configure each wireless base station.
  • Each wireless base station has logic thereon that allows the wireless base stations to discover one another and self-organize into one or more clusters of wireless base stations, wherein the wireless base stations cooperate to select one of the wireless base stations as a master of each cluster.
  • the logic on each wireless base station provides a failure mechanism such that if the master becomes inoperable, another wireless base station is promoted to master.
  • EP 1 895 785 A1 discloses a method for implementing mobile switch center dual homing, wherein the method comprises the steps of dividing a physical mobile switch center server into more than one virtual mobile switch center servers, establishing dual homing relations between different virtual mobile switch center servers and different physical mobile switch center servers, setting the state of the virtual switch servers as idle, determining whether to switch by the mobile switch center server via heartbeat detection, and setting the state of a virtual mobile switch center as active if it is needed to switch, otherwise proceeding to normal work and detection.
  • the present invention provides a method for establishing a self-organized emergency mobile core in a cellular communication network, the cellular communication network having a core element.
  • program code for implementing core network functionality is stored on at least one stationary network element of the cellular communication network allowing to host virtual network functionality, wherein the core network functionality remains inactive when the core element is available.
  • an emergency event within the cellular communication network resulting in an unavailability of the core element is detected and in response to the detected emergency event, operating the core network functionality is started in order to establish a self-organized emergency mobile core.
  • the method is based on program code for implementing core network functionality which is stored on at least one stationary network element of the cellular communication network allowing hosting virtual network functionality, in particular a software survival kit including all necessary core element software.
  • the core network functionality can be operated in at least two different modes: If the core element is available, thus no emergency event resulting in an unavailability of the core element has been detected, the core network functionality remains inactive, and, if an emergency event resulting in an unavailability of the core element has been detected, the core network functionality starts operating in order to establish a self-organized mobile core.
  • an emergency mobile network can be created in an automated manner, allowing connectivity between client devices and undamaged base stations and, thus, a standalone mobile network can be created by survived network elements when the core element becomes unavailable.
  • the standalone network can be created without requiring additional effort or appropriate adaptions to the cellular communication network. In particular, no car based deployment of base stations to the emergency area is required.
  • the at least one stationary network element of the cellular communication network allowing to host virtual network functionality can be a base station or a network interface device.
  • a virtualized network function, or VNF typically consists of one or more virtual machines running different software and processes, on top of industry standard high volume servers, switches and storage, or even cloud computing infrastructure, instead of having custom hardware appliances for each network function. Since base stations and network interface devices of common cellular communication systems comprise a processor adapted to run a virtual machine, these components allow hosting of virtual network functionality.
  • program code for implementing core network functionality is preferably stored on all base stations within the cellular communication network.
  • the core network functionality can include all mobile core entities required for establishing connection between a client device and the cellular communication network.
  • the core network functionality can include a connectivity gateway functionality, a mobility management entity functionality and a home subscriber server functionality.
  • a connectivity gateway provides connectivity from client devices to external data networks by being the point of exit and entry for the traffic of the client device.
  • the mobility management entity is the key control node for the network access. It is responsible for idle mode client devices paging and tagging procedure including retransmissions.
  • the home subscriber server function is a master user database that supports network entities that actually handle calls. It contains the subscription-related information, the subscriber profiles, performs authentication and authorization of the user, and can provide information about the subscriber's location and IP information.
  • the core network functionality includes all necessary functionality to establish the self-organized emergency mobile core, thereby creating the standalone network.
  • the core network functionality can include further software functionality of a common core element of a cellular communication network, too, for example multimedia subsystem functionality.
  • the method can further comprise the step of dropping communication of the client device with the core element and connecting the client device to the self-organized emergency mobile core in response to the detected emergency event.
  • the program code for implementing core network functionality is stored on at least two stationary network elements of the cellular communication network allowing to host virtual network functionality, and the method comprises the following: One of the at least two stationary network elements on which the program code for implementing core network functionality is stored is selected as a master element for operating the core network functionality based on the reachability of the respective network element and/or the performance of the respective network element. Then operating the core network functionality is started on the master element in order to establish a self-organized emergency mobile core in response to the detected emergency event.
  • the program code for implementing core network functionality is stored on at least two stationary network elements of the cellular communication network allowing to host virtual network functionality, and the method comprises the following: Operating the core network functionality is started on at least two stationary network elements which interconnect with each other in order to establish the self-organized emergency mobile core in response to the detected emergency event, wherein the at least two stationary network elements on which the core network functionality is operated are selected according to their reachability and/or their performance.
  • the core network functionality in order to establish a self-organized mobile core can either be operated on one master element or shared on one or more network elements, for example if the cellular communication network comprises a large amount of base stations.
  • the master element or the network elements on which the core network functionality is operated should be selected according to their reachability to other network elements and/or according to their performance.
  • a self-organized standalone network can be created for optimal data path between multiple network elements.
  • the method can comprise the steps of detecting that the core element is reaccessible after the emergency event and terminating operating the core network functionality and restarting communication over the core element in response to the reaccessibility of the core element.
  • a further handover process for reconnection is established, for restarting the core element and reconnecting data flow to the core element, when the core element is again reaccessible after the emergency event, thus operating the cellular communication network in its normal mode.
  • the method further comprises the steps of detecting if there are one or more undamaged base stations in response to the detected emergency event and creating a coverage map of a remaining network by means of the one or more undamaged base stations discovering each other via available active interconnections, if there are one or more undamaged base stations. Further, it is determined if at least one of the one or more undamaged base stations has connectivity to the core element and communication of the client device with the core element in the remaining network is started, if at least one of the undamaged base stations has connectivity to the core element.
  • a remaining network can be created by means of the undamaged base stations and traffic can be routed to client devices without having to create a standalone emergency mobile network, wherein minimal interruption to client devices is felt.
  • the cellular communication network has a core element and the system comprises at least one stationary network element of the cellular communication network allowing to host virtual network functionality and a detection means for detecting an emergency event within the cellular communication network resulting in an unavailability of the core element.
  • the at least one stationary network element of the cellular communication network allowing to host virtual network functionality comprises a storage unit in which program code for implementing core network functionality is stored and the system comprises a processing means for starting operating the core network functionality in order to establish a self-organized emergency mobile core in response to an emergency event detected by the detection means.
  • the system is based on program code for implementing core network functionality which is stored in the storage unit of at least one stationary network element of the cellular communication network allowing hosting virtual network functionality, in particular a software survival kit including all necessary core element software.
  • the core network functionality can be operated in at least two different modes: If it is detected that the core element is available, thus no emergency event resulting in an unavailability of the core element has been detected by the detection means, the core network functionality remains inactive, and, if the detection means detects an emergency event resulting in an unavailability of the core element, the processing means starts operating the core network functionality in order to establish a self-organized mobile core.
  • the system can create an emergency mobile network in an automated manner, allowing connectivity between client devices and undamaged base stations and, thus, a standalone mobile network can be created by survived network elements when the core element becomes unavailable.
  • the standalone network can be created without requiring additional effort or appropriate adaptions to the cellular communication network. In particular, no car based deployment of base stations to the emergency area is required.
  • the at least one stationary network element of the cellular communication network allowing to host virtual network functionality can be a base station or a network interface device.
  • a virtualized network function, or VNF typically consists of one or more virtual machines running different software and processes, on top of industry standard high volume servers, switches and storage, or even cloud computing infrastructure, instead of having custom hardware appliances for each network function. Since base stations and network interface devices of common cellular communication systems comprise a processor adapted to run a virtual machine, these components allow hosting of virtual network functionality.
  • program code for implementing core network functionality is preferably stored on all base stations within the cellular communication network.
  • the core network functionality can include all mobile core entities required for establishing connection between a client device and the cellular communication network.
  • the core network functionality can include a connectivity gateway functionality and, a mobility management entity functionality and a home subscriber server functionality.
  • a connectivity gateway provides connectivity from client devices to external data networks by being the point of exit and entry for the traffic of the client device.
  • the mobility management entity is the key control node for the network access. It is responsible for idle mode client devices paging and tagging procedure including retransmissions.
  • the home subscriber server function is a master user data-base that supports network entities that actually handle calls. It contains the subscription-related information, the subscriber profiles, performs authentication and authorization of the user, and can provide information about the subscriber's location and IP information.
  • the core network functionality includes all necessary functionality to establish the self-organized emergency mobile core, thereby creating the standalone network.
  • the core network functionality can include further software functionality of a common core element of a cellular communication network, too, for example multimedia subsystem functionality.
  • the system can comprise a means for dropping communication of a client device with the core element in response to an emergency event detected by the detection means and a connecting means for connecting the client device to the self-organized emergency mobile core in response to an emergency event detected by the detection means.
  • the system comprises at least two stationary network elements of the cellular communication network allowing to host virtual network functionality, wherein each of the at least two stationary network elements of the cellular communication network allowing to host virtual network functionality comprises a storage unit in which the program code for implementing core network functionality is stored.
  • the system further comprises a selecting means for selecting one of the at least two stationary network elements as a master element for operating the core network functionality based on the reachability of the respective network element and/or the performance of the respective network element and the processing means starts operating the core network functionality on the master element in response to an emergency event detected by the detection means.
  • the system comprises at least two stationary network elements of the cellular communication network allowing to host virtual network functionality, wherein each of the at least two stationary network elements of the cellular communication network allowing to host virtual network functionality comprises a storage unit in which the program code for implementing core network functionality is stored.
  • the processing means starts operating the core network functionality on at least two network elements which interconnect with each other in order to establish the self-organized emergency mobile core in response to an emergency event detected by the detection means.
  • the stationary network elements on which the core network functionality is operated are selected according to their reachability and/or their performance.
  • the processing means can either start operating the core network functionality in order to establish a self-organized mobile core on one master element or shared on one or more network elements, for example if the cellular communication network comprises a large amount of base stations.
  • the master element or the network elements on which the core network functionality is operated should be selected according to their reachability to other network elements and/or according to their performance.
  • the system can create a self-organized standalone network for optimal data path between multiple network elements.
  • the system can comprise a second detection means for detecting that the core element is reaccessible after an emergency event has been detected by the detection means, a terminating means for terminating operating the core network functionality and a means for restarting communication over the core element in response to the reaccessibility of the core element.
  • a further handover process for reconnection is established by the second detection means, the terminating means and the means for restarting communication over the core element, for restarting the core element and reconnecting data flow to the core element, when the core element is again reaccessible after the emergency event, thus operating the cellular communication network in its normal mode.
  • the system also comprises a third detection means for detecting if there are one or more undamaged base stations in response to the detected emergency event detected by the detection means and creating means for creating a coverage map of a remaining network by means of the one or more undamaged base stations discovering each other via available active interconnections, if there are one or more undamaged base stations.
  • the system comprises a determining means for determining if at least one of the one or more undamaged base stations has connectivity to the core element and a second connecting means for starting communication of the client device with the core element in the remaining network, if at least one of the undamaged base stations has connectivity to the core element.
  • a remaining network can be created by means of the undamaged base stations and traffic can be routed to client devices without having to create a standalone emergency mobile network, wherein minimal interruption to client devices is felt.
  • Figure 1 illustrates a cellular communication network 1.
  • the cellular communication network comprises a core element 2 and a Radio Access Network (RAN) 3.
  • the Radio Access Network 3 further comprises base stations 4 and respective mobile stations, the client devices 5.
  • Each of the client devices 5 is typically connected to one of the base stations 4. This connection needs management of backhaul and core network connectivity, which is usually facilitated by the core element 2.
  • the core element 2 includes at least a connectivity gateway functionality 6 and a mobility management functionality 7.
  • the Radio Access Network 3 becomes useless, even if the base stations 4 are still undamaged and, therefore, available.
  • Fig. 2 illustrates a system 10 for establishing a self-organized mobile core in a cellular communication network according to embodiments of the present invention.
  • the cellular communication network has a core element 11, providing at least a connectivity gateway, a mobility management functionality and a home subscriber server functionality.
  • the system 10 comprises two stationary network elements 12 of the cellular communication network allowing to host virtual network functionality and a detection means 13 for detecting an emergency event within the cellular communication network resulting in an unavailability of the core element 11.
  • each of the two stationary network elements 12 of the cellular communication network allowing to host virtual network functionality comprises a storage unit 14 in which program code for implementing core network functionality is stored and the system 10 further comprises a processing means 15 for starting operating the core network functionality in order to establish a self-organized emergency mobile core in response to an emergency event detected by the detection means 13.
  • the processing means is realized by the processors 16 of the two stationary network elements 12.
  • Fig. 2 illustrates a system 10 for establishing a self-organized emergency mobile core in a cellular communication network, which is based on program code for implementing core network functionality that is stored in the storage units 14 of the two stationary network elements 12 of the cellular communication network allowing hosting virtual network functionality.
  • the core network functionality can be operated in at least two different modes: If it is detected that the core element is available, thus no emergency event resulting in an unavailability of the core element 11 has been detected by the detection means 13, the core network functionality remains inactive, and, if the detection means 13 detects an emergency event resulting in an unavailability of the core element 11, the processing means 15 starts operating the core network functionality in order to establish a self-organized mobile core.
  • the system 10 can create an emergency mobile network in an automated manner, allowing connectivity between client devices and undamaged base stations and, thus, a standalone mobile network can be created when the core element 11 becomes unavailable.
  • the standalone network can be created without requiring additional effort or appropriate adaptions to the cellular communication network. In particular, no car based deployment of base stations to the emergency area is required.
  • the two stationary network elements 12 of the cellular communication network allowing to host virtual network functionality are a base station 17 and a network interface device 18.
  • the core network functionality includes a connectivity gateway functionality as well as a mobile management functionality and a home subscriber server functionality.
  • the core network functionality can include further software functionality of a common core element of a cellular communication network, too, for example multimedia subsystem functionality.
  • the system 10 further comprises a selecting means 21 for selecting one of the two stationary network elements 12 as a master element for operating the core network functionality based on the reachability of the respective network element and/or the performance of the respective network element.
  • the processing means 15 starts operating the core network functionality on the master element in response to an emergency event detected by the detection means 13.
  • the processing means can also be accomplished to start operating the core network functionality on the two stationary network elements 12 which can therefore interconnect with each other, in order to establish the self-organized emergency mobile core in response to an emergency event detected by the detection means 13.
  • the master element or the network elements on which the core network functionality is operated should be selected according to their reachability to other network elements and/or according to their performance in such a way that the system 10 can create a self-organized standalone network for optimal data path between multiple network elements.
  • the shown system 10 further comprises a second detection means 22 for detecting that the core element 11 is reaccessible again after an emergency event has been detected by the detection means 13, a terminating means 23 for terminating operating the core network functionality and a means 24 for restarting communication over the core element 11 in response to the reaccessibility of the core element 11.
  • a further handover process for reconnection is established by the second detection means 22, the terminating means 23 and the means 24 for restarting communication over the core element 11, for restarting the core element 11 and reconnecting data flow to the core element 11, when the core element 11 is again reaccessible after the emergency event, thus operating the cellular communication network in the normal mode.
  • a third detection means 25 for detecting if there are one or more undamaged base stations in response to the detected emergency event detected by the detection means 13 and creating means 26 for creating a coverage map of a remaining network by means of the one or more undamaged base stations discovering each other via available active interconnections, if there are one or more undamaged base stations.
  • the system 10 according to the embodiment of figure 2 comprises a determining means 27 for determining if at least one of the one or more undamaged base stations has connectivity to the core element 11 and a second connecting means 28 for starting communication of the client device with the core element 11 in the remaining network, if at least one of the undamaged base stations has connectivity to the core element 11.
  • Fig. 3 illustrates a flow chart of a method 30 for establishing a self-organized mobile core in a cellular communication network according to embodiments of the present invention.
  • the cellular communication network has a core element and the method comprises the following:
  • program code for implementing core network functionality is stored on at least one stationary network element of the cellular communication network allowing to host virtual network functionality, wherein the core network functionality remains inactive when the core element is available.
  • step 32 it is detected whether an emergency event within the cellular communication network resulting in an unavailability of the core element occurred. If it is detected in step 32 that an emergency event within the cellular communication network resulting in the unavailability of the core element occurred, operating the core network functionality is started in step 33, in order to establish a self-organized emergency mobile core.
  • Step 32 comprises running an intelligent algorithm for core element failure detection in order to detect whether an emergency event within the cellular communication network resulting in the unavailability of the core element occurred or not. If it is detected that no emergency event within the cellular communication network resulting in the unavailability of the core element occurred, the cellular communication network is operated in its normal mode, and thus data flow within the cellular communication network is connected to the core element. If it is detected that an emergency event within the cellular communication network resulting in the unavailability of the core element occured, the method continues with step 33 in order to establish a self-organized emergency mobile core and thus with the creation of a standalone mobile network.

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  • Computer Networks & Wireless Communication (AREA)
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  • Mobile Radio Communication Systems (AREA)

Claims (12)

  1. Verfahren zum Einrichten eines selbstorganisierten mobilen Notfallkerns in einem zellularen Kommunikationsnetz, wobei das zellulare Kommunikationsnetz ein Kernelement aufweist, wobei das Verfahren (30) die folgenden Schritte umfasst:
    - Speichern von Programmcode zum Umsetzen einer Kernnetzfunktionalität auf mindestens einem stationären Netzelement des zellularen Kommunikationsnetzes, das es ermöglicht, virtuelle Netzfunktionalität zu hosten, wobei die Kernnetzfunktionalität inaktiv bleibt, wenn das Kernelement verfügbar ist (31);
    - Erkennen eines Notfalls in dem zellularen Kommunikationsnetz, der eine Nichtverfügbarkeit des Kernelements zur Folge hat (32);
    - Starten des Betriebs der Kernnetzfunktionalität, um einen selbstorganisierten mobilen Notfallkern einzurichten, in Reaktion auf den erkannten Notfall (33), dadurch gekennzeichnet, dass das Verfahren ferner die folgenden Schritte umfasst:
    - Erkennen, ob eine oder mehrere unbeschädigte Basisstationen vorhanden sind, in Reaktion auf den erkannten Notfall;
    - wenn eine oder mehrere unbeschädigte Basisstationen vorhanden sind, Erzeugen einer Abdeckungskarte eines verbleibenden Netzes mithilfe der einen oder mehreren unbeschädigten Basisstationen, die einander über verfügbare aktive Verbindungen dazwischen entdecken;
    - Bestimmen, ob mindestens eine der einen oder mehreren unbeschädigten Basisstationen Konnektivität zu dem Kernelement aufweist;
    - Starten einer Kommunikation einer Client-Vorrichtung mit dem Kernelement in dem verbleibenden Netz, wenn mindestens eine der einen oder mehreren unbeschädigten Basisstationen Konnektivität zu dem Kernelement aufweist,
    wobei die Kernnetzfunktionalität eine Gateway-Konnektivitätsfunktionalität, eine Mobilitätsverwaltungsfunktionalität und eine Heimteilnehmerserverfunktionalität beinhaltet.
  2. Verfahren nach Anspruch 1, wobei das mindestens eine stationäre Netzelement des zellularen Kommunikationsnetztes, das es ermöglicht, virtuelle Netzfunktionalität zu hosten, eine Basisstation oder eine Netzschnittstellenvorrichtung ist.
  3. Verfahren nach einem der Ansprüche 1 oder 2, wobei das Verfahren (30) ferner den folgenden Schritt umfasst:
    - Abbrechen der Kommunikation der Client-Vorrichtung mit dem Kernelement und Verbinden der Client-Vorrichtung mit dem selbstorganisierten mobilen Notfallkern in Reaktion auf den erkannten Notfall.
  4. Verfahren nach einem der Ansprüche 1 bis 3, wobei der Programmcode zum Umsetzen der Kernnetzfunktionalität auf mindestens zwei stationären Netzelementen des zellularen Kommunikationsnetzes gespeichert ist, die es ermöglichen, virtuelle Netzfunktionalität zu hosten, und wobei das Verfahren (30) ferner die folgenden Schritte umfasst:
    - Auswählen eines der mindestens zwei stationären Netzelemente, auf denen der Programmcode zum Umsetzen der Kernnetzfunktionalität gespeichert ist, als ein Master-Element zum Betreiben der Kernnetzfunktionalität auf Grundlage der Erreichbarkeit des jeweiligen Netzelements und/oder der Leistung des jeweiligen Netzelements;
    - Starten des Betriebs der Kernnetzfunktionalität auf dem Masterelement, um einen selbstorganisierten mobilen Notfallkern einzurichten, in Reaktion auf den erkannten Notfall.
  5. Verfahren nach einem der Ansprüche 1 bis 3, wobei der Programmcode zum Umsetzen der Kernnetzfunktionalität auf mindestens zwei stationären Netzelementen des zellularen Kommunikationsnetzes gespeichert ist, die es ermöglichen, virtuelle Netzfunktionalität zu hosten, und wobei das Verfahren (30) ferner den folgenden Schritt umfasst:
    - Starten des Betriebs der Kernnetzfunktionalität auf mindestens zwei stationären Netzelementen, die miteinander verbunden sind, um den selbstorganisierten mobilen Notfallkern einzurichten, in Reaktion auf den erkannten Notfall, wobei die mindestens zwei stationären Netzelemente, auf denen die Kernnetzfunktionalität betrieben wird, gemäß ihrer Erreichbarkeit und/oder ihrer Leistung ausgewählt sind.
  6. Verfahren nach einem der Ansprüche 1 bis 5, wobei das Verfahren (30) ferner die folgenden Schritte umfasst:
    - Erkennen, dass das Kernelement nach dem Notfall erneut zugänglich ist;
    - Beenden des Betriebs der Kernnetzfunktionalität und Neustarten von Kommunikation über das Kernelement in Reaktion auf die erneute Zugänglichkeit des Kernelements.
  7. System zum Einrichten eines selbstorganisierten mobilen Notfallkerns in einem zellularen Kommunikationsnetz, wobei das zellulare Kommunikationsnetz ein Kernelement (11) aufweist, wobei das System (10) mindestens ein stationäres Netzelement (12) des zellularen Kommunikationsnetzes aufweist, das es ermöglicht, virtuelle Netzfunktionalität zu hosten, und ein Erkennungsmittel (13) zum Erkennen eines Notfalls in dem zellularen Kommunikationsnetz, der eine Nichtverfügbarkeit des Kernelements (11) zur Folge hat, wobei das mindestens eine stationäre Netzelement (12) des zellularen Kommunikationsnetzes, das es ermöglicht, virtuelle Netzfunktionalität zu hosten, eine Speichereinheit (14) umfasst, in der Programmcode zum Umsetzen einer Kernnetzfunktionalität gespeichert ist, und wobei das System (10) ein Verarbeitungsmittel (15) zum Starten des Betriebs der Kernnetzfunktionalität umfasst, um einen selbstorganisierten mobilen Notfallkern einzurichten, in Reaktion auf einen von dem Erkennungsmittel (13) erkannten Notfall, dadurch gekennzeichnet, dass das System ferner ein drittes Erkennungsmittel (25) umfasst, um zu erkennen, ob eine oder mehrere unbeschädigte Basisstationen vorhanden sind, in Reaktion auf den erkannten Notfall, der von dem Erkennungsmittel (13) erkannt wurde, sowie ein Erzeugungsmittel (26) zum Erzeugen einer Abdeckungskarte eines verbleibenden Netzes mithilfe der einen oder mehreren unbeschädigten Basisstationen, die einander über verfügbare aktive Verbindungen dazwischen erkennen, ein Bestimmungsmittel (27) zum Bestimmen, ob mindestens eine der einen oder mehreren unbeschädigten Basisstationen Konnektivität zu dem Kernelement (11) aufweist, und ein zweites Verbindungsmittel (28) zum Starten einer Kommunikation einer Client-Vorrichtung mit dem Kernelement (11) in dem verbleibenden Netz, wenn mindestens eine der unbeschädigten Basisstationen Konnektivität zu dem Kernelement (11) aufweist, wobei die Kernnetzfunktionalität eine Gateway-Konnektivitätsfunktionalität, eine Mobilitätsverwaltungsfunktionalität und eine Heimteilnehmerserverfunktionalität beinhaltet.
  8. System nach Anspruch 7, wobei das mindestens eine stationäre Netzelement (12) des zellularen Kommunikationsnetztes, das es ermöglicht, virtuelle Netzfunktionalität zu hosten, eine Basisstation (17) oder eine Netzschnittstellenvorrichtung (18) ist.
  9. System nach einem der Ansprüche 7 oder 8, wobei das System (10) ferner ein Mittel (19) zum Abbrechen der Kommunikation der Client-Vorrichtung mit dem Kernelement (11) in Reaktion auf einen von dem Erkennungsmittel (13) erkannten Notfall und ein Verbindungsmittel (20) zum Verbinden der Client-Vorrichtung mit dem selbstorganisierten mobilen Notfallkern in Reaktion auf einen von dem Erkennungsmittel (13) erkannten Notfall umfasst.
  10. System nach einem der Ansprüche 7 bis 9, wobei das System (10) mindestens zwei stationäre Netzelemente (12) des zellularen Kommunikationsnetzes umfasst, die es ermöglichen, virtuelle Netzfunktionalität zu hosten, wobei jedes der mindestens zwei stationären Netzelemente (12) des zellularen Kommunikationsnetzes, die es ermöglichen, virtuelle Netzfunktionalität zu hosten, eine Speichereinheit (14) umfasst, in welcher der Programmcode zum Umsetzen der Kernnetzfunktionalität gespeichert ist, wobei das System (10) ferner ein Auswahlmittel (21) zum Auswählen eines der mindestens zwei stationären Netzelemente (12) als ein Master-Element zum Betreiben der Kernnetzfunktionalität auf Grundlage der Erreichbarkeit des jeweiligen Netzelements und/oder der Leistung des jeweiligen Netzelements umfasst und wobei das Verarbeitungsmittel (15) den Betrieb der Kernnetzfunktionalität auf dem Master-Element in Reaktion auf einen von dem Erkennungsmittel (13) erkannten Notfall startet.
  11. System nach einem der Ansprüche 7 bis 9, wobei das System (10) mindestens zwei stationäre Netzelemente (12) des zellularen Kommunikationsnetzes umfasst, die es ermöglichen, virtuelle Netzfunktionalität zu hosten, wobei jedes der mindestens zwei stationären Netzelemente (12) des zellularen Kommunikationsnetzes, die es ermöglichen, virtuelle Netzfunktionalität zu hosten, eine Speichereinheit (14) umfasst, in welcher der Programmcode zum Umsetzen der Kernnetzfunktionalität gespeichert ist, und wobei das Verarbeitungsmittel den Betrieb der Kernnetzfunktionalität auf mindestens zwei Netzelementen, die miteinander verbunden sind, in Reaktion auf ein von dem Erkennungsmittel (13) erkannten Notfall startet, um den selbstorganisierten mobilen Notfallkern einzurichten, wobei die mindestens zwei stationären Netzelemente, auf denen die Kernnetzfunktionalität betrieben wird, gemäß ihrer Erreichbarkeit und/oder ihrer Leistung ausgewählt sind.
  12. System nach einem der Ansprüche 7 bis 11, wobei das System (10) ferner ein zweites Erkennungsmittel (22) zum Erkennen, dass das Kernelement (11) nach dem Erkennen eines Notfalls durch das Erkennungsmittel (13) wieder zugänglich ist, ein Beendigungsmittel (23) zum Beenden des Betriebs der Kernnetzfunktionalität und ein Mittel (24) zum Neustarten von Kommunikation über das Kernelement (11) in Reaktion auf die erneute Zugänglichkeit des Kernelements (11) umfasst.
EP14003736.7A 2014-11-06 2014-11-06 Verfahren und System zur Einrichtung eines selbstorganisierten mobilen Kerns in einem zellularen Kommunikationsnetzwerk Active EP3018931B1 (de)

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